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in SQL by (22.4k points)

MySQL has something like this:

INSERT INTO visits (IP, hits)

VALUES ('127.0.0.1', 1)

ON DUPLICATE KEY UPDATE hits = hits + 1;

As far as I know, this feature doesn't exist in SQLite, what I want to know is if there is any way to achieve the same effect without having to execute two queries. Also, if this is not possible, what do you prefer:

1. SELECT + (INSERT or UPDATE) or

2. UPDATE (+ INSERT if UPDATE fails)

1 Answer

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by (40.3k points)

Try the code given below:

INSERT OR IGNORE INTO visits VALUES ($ip, 0);

UPDATE visits SET hits = hits + 1 WHERE ip LIKE $ip;

The above query requires the "ip" column to have the UNIQUE (or PRIMARY KEY) constraint.

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